Jack Knife

A dive in which you jump into a pool , fold in your body with your hands & feet close to each other with the finger tips and toes pointing down, then unfolding bringing your feet to the air and keeping your hands where they are.
person 1 on diving board "HEY GUYS! CHECK OUT THIS JACK KNIFE IM GONNA DO IN THIS POOL!!"
person 2 from a far "YEAH DO IT!"
by Banzai Boy November 23, 2018
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Bologna Knife

A falice or more commonly known as a penis.
Alex: Hey, where the hell is Sam?

Chris: Oh she is at the Rockies game. The last text I got from her is "I'm worried I might get stabbed here".

Alex: I don't know why she would be worried the only thing she's going to get stabbed by is a Bologna Knife.
by the1HOOFhearted October 02, 2011
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Shoe knife

A knife either stored in a shoe or made part of a shoe as a weapon. Also could be a knife used to remove rocks from the treads of shoes.
"I was worried I wouldn't be able to return the shoes I bought until I used the shoe knife to take the pebble out of the tread."
by Boat dad December 25, 2011
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Knife-Punch

A knife-punch is a bladed weapon stabbing maneuver so powerful that it forces the victim to fall in the direction of the stab. The victim falls with a momentum equal to the size of the knife and fist multiplied by the speed of the stab, and and is afterwards bleeding profusely
"If I knife-punch you in the face, you will fall backwards bleeding...from the face."
by outsidetheBox January 15, 2010
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Knife Hit

by zip April 25, 2005
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Knife Sex

Knife Sex is considered to be having sex with bronx' mother. This is so because she is so bad at sex, she creates the unpleasant feeling of having sex with a knife. I personally like knife sex.
Bronx mother is the queen of knife sex.
by Thomasmcdonaldo September 26, 2006
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Dick knife

An insult levied at a person with questionable taste in clothing and women, and disregards basic norms on public decency and social hierarchy. SEE: Meat Helmet
(Invented by Kevin Lantz and Doug Forrest)
That dick knife over there just cock blocked me.

Some stupid dick knife hippie just stole MY FUCKING TABLE.
by Il Duce December 24, 2003
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